欢迎来到天天文库
浏览记录
ID:51412252
大小:877.16 KB
页数:4页
时间:2020-03-23
《一种高钒中碳非调质钢的高周疲劳性能.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第39卷第2期Vol畅39No畅22014年2月HEATTREATMENTOFMETALSFebruary2014一种高钒中碳非调质钢的高周疲劳性能1,2221,213邵成伟,陈思联,赵晓丽,惠卫军,曹建春,郝彦英(1.昆明理工大学材料科学与工程学院,云南昆明 650093;2.钢铁研究总院先进钢铁材料技术国家工程研究中心,北京 100081;3.石家庄钢铁有限责任公司开发部,河北石家庄 050031)摘要:采用旋转弯曲疲劳试验探索了一种高钒(0.28%)中碳铁素体+珠光体型锻态非调质钢37MnSiVS的高周疲劳性能,并与传统低钒(0.12%)非调质钢3
2、8MnVS进行了对比。结果表明,37MnSiVS钢的疲劳极限及疲劳极限与抗拉强度的比值均明显高于38MnVS钢及调质钢40Cr,分别为562MPa和0.614。增加钢中V,所形成的大量细小弥散V(C,N)质点与铁素体间具有特定的位向关系,有显著的析出强化和组织细化作用,使37MnSiVS钢微观组织均匀细小,铁素体硬度明显增加,珠光体与铁素体的显微硬度比减小,从而呈现出十分优异的高周疲劳性能。关键词:高周疲劳性能;高钒中碳非调质钢;钒元素;微观组织中图分类号:TG142.4;TG111.8文献标志码:A文章编号:0254-6051(2014)02-0019
3、-04High-cyclefatiguepropertyofhighvanadiummedium-carbonmicroalloyedsteel1,2221,213ShaoChengwei,ChenSilian,ZhaoXiaoli,HuiWeijun,CaoJianchun,HaoYanying(1.InstituteofMaterialScienceandEngineering,KunmingUniversityofScienceandTechnology,KunmingYunnan650093,China;2.NationalEngineering
4、ResearchCenterofAdvancedIronandSteelTechnology,CenterIronandSteelResearchInstitute,Beijing100081,China;3.DevelopmentDepartment,ShijiazhuangIron&SteelCo.,Ltd.,ShijiazhuangHebei050031,China)Abstract:High-cyclefatiguepropertyofahighvanadium(0.28%)medium-carbonmicroalloyedsteel37MnSi
5、VSandtraditionalmedium-carbonmicroalloyedsteel38MnVSforcomparisoninas-forgedstatewerestudiedbyusingrotating-bendingfatiguetest.Theresultsshowthatbothfatiguelimitandtheratiooffatiguelimittotensilestrengthof37MnSiVSsteelaresignificantlyhigherthanthoseof38MnVSsteelandquenchedandtemp
6、ered40Crsteel,whichare562MPaand0.614,respectively.WiththeincreaseofVcontent,higherquantityoffinelydistributedV(C,N)particleswereformed,andtheseV(C,N)particleshavespecificorientationrelationshipwithferritematrixandthusasignificanteffectonprecipitationstrengtheningandmicrostructure
7、fining.Thefineranduniformmicrostructureandthelowermicrohardnessratioofpearlitetoferriteofthe37MnSiVSsteelbecomethemainreasonsforthebetterhigh-cyclefatiguepropertiesof37MnSiVSsteel.Keywords:high-cyclefatigueproperty;highvanadiummedium-carbonmicroalloyedsteel;vanadium;microstructur
8、e[1-2,5-8]在微合金非调质钢中,V为最主要的微合金化元性能亦有显著的影响
此文档下载收益归作者所有